de.unioninvestment.eai.portal.support.vaadin.ParameterRetrievalRequestHandler.java Source code

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Here is the source code for de.unioninvestment.eai.portal.support.vaadin.ParameterRetrievalRequestHandler.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package de.unioninvestment.eai.portal.support.vaadin;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

import javax.portlet.PortletRequest;
import javax.portlet.RenderRequest;
import javax.servlet.http.HttpServletRequest;

import com.liferay.portal.util.PortalUtil;
import com.vaadin.server.RequestHandler;
import com.vaadin.server.VaadinPortletService;
import com.vaadin.server.VaadinRequest;
import com.vaadin.server.VaadinResponse;
import com.vaadin.server.VaadinSession;

public class ParameterRetrievalRequestHandler implements RequestHandler {

    private static final long serialVersionUID = 1L;

    @Override
    public boolean handleRequest(VaadinSession session, VaadinRequest request, VaadinResponse response)
            throws IOException {
        PortletRequest portletRequest = VaadinPortletService.getCurrentPortletRequest();
        if (portletRequest instanceof RenderRequest) {
            Map<String, String[]> allParameters = getOriginalServletRequestParameters(portletRequest);
            Map<String, String[]> parameters = copyParametersIgnoreLiferayPrefix(allParameters);
            session.setAttribute("parameters", parameters);
        }
        return false;
    }

    @SuppressWarnings("unchecked")
    private Map<String, String[]> getOriginalServletRequestParameters(PortletRequest portletRequest) {
        HttpServletRequest servletRequest = PortalUtil.getHttpServletRequest(portletRequest);
        HttpServletRequest originalRequest = PortalUtil.getOriginalServletRequest(servletRequest);
        return originalRequest.getParameterMap();
    }

    private Map<String, String[]> copyParametersIgnoreLiferayPrefix(Map<String, String[]> originalParameters) {
        Map<String, String[]> parameters = new HashMap<String, String[]>();
        for (Entry<String, String[]> entry : originalParameters.entrySet()) {
            String key = entry.getKey();
            if (!(key.startsWith("v_") || key.startsWith("p_"))) {
                parameters.put(key, entry.getValue());
            }
        }
        return parameters;
    }

    @SuppressWarnings("unchecked")
    public Map<String, String[]> getParameters() {
        return (Map<String, String[]>) VaadinSession.getCurrent().getAttribute("parameters");
    }

}